rdma_op ffff88809ac8ded8 conn xmit_rdma           (null)
rdma_op ffff88809098c618 conn xmit_rdma           (null)
rdma_op ffff888095d7c558 conn xmit_rdma           (null)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 18674 at net/rds/message.c:227 rds_message_alloc_sgs+0xf8/0x140 net/rds/message.c:227
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 18674 Comm: syz-executor.0 Not tainted 4.14.149 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:rds_message_alloc_sgs+0xf8/0x140 net/rds/message.c:227
RSP: 0018:ffff888098e27840 EFLAGS: 00010297
RAX: ffff888097d20600 RBX: ffff88809730db00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000088 RDI: ffff88809730dc74
RBP: ffff888098e27870 R08: 00000000ac9839be R09: 0000000000000000
R10: 0000000000000000 R11: ffff888097d20600 R12: 0000000000000088
R13: 0000000000000000 R14: ffff88809730dc70 R15: 0000000000000008
 rds_cmsg_rdma_args+0x465/0x1170 net/rds/rdma.c:621
 rds_cmsg_send net/rds/send.c:943 [inline]
 rds_sendmsg+0xd59/0x1db0 net/rds/send.c:1132
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459a59
RSP: 002b:00007fe3b43a0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe3b43a16d4
R13: 00000000004c7c0f R14: 00000000004dd9b0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..